77 results about "Diaphragm compressor" patented technology

This utility model discloses a diaphragm compressor with a base, including a compressor body. A pressure gauge is mounted on the top of the compressor body, a fixing block is welded to the top of the pressure gauge, a bushing is welded to the top of the fixing block, a first external threaded rod is sleeved inside the bushing, a fixing frame is welded to the surface of the first external threaded rod, and a cover plate is welded to one end of the fixing frame. This diaphragm compressor with a base, by mounting a pressure gauge on the top of the compressor body, welding a fixing block to the top of the pressure gauge, and simultaneously welding a bushing to the top of the fixing block, allows the first external threaded rod to be sleeved inside the bushing, and a fixing frame to be welded to the surface of the first external threaded rod, until the pressure gauge on the pressure gauge is exposed. Then, a control device transmits power from a power supply to a light strip, which illuminates the pressure gauge, making it easier and clearer to observe.

The utility model belongs to the technical field of metal material fatigue tests, and particularly relates to a testing device for diaphragm compressor research and development, which comprises a support and a testing assembly, the support is a rectangular frame-shaped support, clamping assemblies are arranged in the middle of the inner side of a left frame and the middle of the inner side of a right frame of the support, and the testing assembly comprises a hydraulic cylinder and a testing mold. The fixed end of the hydraulic cylinder is connected with the inner side of an upper side frame of the support, the telescopic end of the hydraulic cylinder is connected with the upper side of the test mold, the test mold comprises an upper mold, a lower mold and a connecting plate, and the connecting plate is fixedly connected with the rear sides of the upper mold and the lower mold. And a periodic load test is carried out, and the stress state of the compressor in actual service is simulated to the greatest extent, so that the data of the symmetric bending fatigue test of the metal diaphragm is true and credible.

The utility model discloses a diaphragm adjusting device of a diaphragm compressor under low-negative-pressure air inlet. The diaphragm adjusting device comprises a piston assembly, a crosshead assembly, an air distribution disc and an oil distribution disc. The three metal diaphragms are arranged between the gas side diaphragm cavity and the oil side diaphragm cavity in an overlapped mode, and the middle diaphragm is provided with a guide groove to be communicated with the leakage detection opening; the electromagnet is arranged on the surface layer, close to the diaphragm side, of the oil distribution disc; the piezoelectric ceramics are respectively fixed in the machine body assembly and are close to an upper dead center and a lower dead center of the crosshead assembly; the springs are fixed on the two sides of the machine body assembly, are insulated from the crosshead assembly and are used for triggering the piezoelectric ceramics; the electromagnets are electrically connected with the piezoelectric ceramics respectively; the switch is attracted and controlled by the electromagnet to switch on and off of a circuit; the slide rheostat is connected in series with the electromagnet to adjust the adsorption force; the spring impacts the piezoelectric ceramic when the crosshead assembly moves to the upper stop point and the lower stop point, current is excited to enable the electromagnet to attract the switch, and then power-on and power-off of the electromagnet are controlled.

A kind of hydraulic oil supplement system and supplement method of diaphragm compressor, control module judges that oil discharge pressure signal is less than the preset low alarm threshold of oil discharge pressure, and exhaust pressure signal is less than the preset low alarm threshold of exhaust pressure, and exhaust flow signal is greater than the preset high alarm threshold of exhaust flow, then control module will action instruction be given to actuating mechanism, actuating mechanism automatically rotates the adjusting screw cover on oil supplement plunger pump, it moves towards the direction of eccentric sleeve, to increase the movement stroke of plunger, to increase the oil supplement amount of oil supplement plunger pump.The present application can adjust the oil supplement amount of oil supplement plunger pump on line without stopping diaphragm compressor and disassembling cylinder head component, to supplement the hydraulic oil that leakage increases due to piston sealing element failure or sealing performance weakening of diaphragm compressor, reduce the great workload brought by shutdown replacement sealing element, and avoid the economic loss caused by shutdown.

The application relates to a diaphragm head assembly and a diaphragm compressor. The diaphragm head assembly comprises a cylinder, a guide oil disc, an oil distribution disc, a cylinder cover and a diaphragm. The cylinder is provided with a first channel and a chamber which are connected with each other. The guide oil disc is arranged in the chamber and is opposite to the first channel in the axial direction of the guide oil disc. The guide oil disc is spaced apart from the wall surface of the chamber so that an oil distribution area is defined between the surface of the guide oil disc and the opposite wall surface of the chamber. The oil distribution disc is provided with a first through hole and an oil side diaphragm chamber which are connected with each other. The oil distribution disc is arranged on the side of the guide oil disc which is away from the first channel in the axial direction of the guide oil disc. The oil distribution disc is spaced apart from one side of the guide oil disc. The first through hole is communicated with the oil distribution area. The cylinder cover is connected with the cylinder. The diaphragm head assembly can avoid the center of the diaphragm being first attached to the wall surface of the gas side diaphragm chamber before the edge of the diaphragm, thereby avoiding the problem that the gas in the gas side diaphragm chamber cannot be completely discharged during the compression of the exhaust gas, reducing the clearance volume of the diaphragm compressor and improving the volumetric efficiency of the diaphragm compressor.

This invention discloses a non-destructive condition monitoring and fault prediction system for a diaphragm compressor, comprising a data acquisition module, a condition monitoring module, and a fault prediction module. The data acquisition module is used to non-invasively acquire multi-source physical signals during the operation of the diaphragm compressor. The condition monitoring module is used to receive and process the raw signals transmitted by the data acquisition module. The fault prediction module is used to perform trend prediction and lifespan estimation based on historical health time-series data and feature sequences output by the condition monitoring module. This invention achieves comprehensive perception of the critical states of the diaphragm compressor by integrating multi-source sensors and employing a non-invasive signal acquisition method. The system utilizes multi-dimensional feature extraction and fusion analysis technology to assess the health status of the diaphragm in real time and construct a predictive model based on time-series data, providing early warning of potential faults and predicting the remaining service life.

The invention discloses a hydrogen refueling station diaphragm compressor system and a control method. The technical problem that an O-shaped ring of an air inlet and outlet valve of a diaphragm compressor is frequently melted and fails is mainly solved. The diaphragm compressors in the diaphragm compressor system of the hydrogen refueling station are respectively connected with different hydrogen inlet pipelines through corresponding branches, so that the diaphragm compressors working under a low-pressure working condition can realize high-pressure hydrogen inlet by switching high-pressure hydrogen inlet pipelines, and the diaphragm compressors are cooled through high-pressure operation; and meanwhile, based on the T-S control model and a corresponding clustering radius self-adaptive adjustment mechanism, dynamic adaptive adjustment of the operating parameters of the diaphragm compressor system is achieved, so that the purpose of stepped increase of the operating duration of the diaphragm compressor is achieved, and the operating efficiency and safety of the diaphragm compressor system are improved.

The novel sealing structure comprises an air cavity, an oil cavity and a diaphragm set arranged between the air cavity and the oil cavity, sealing grooves are formed in the sides, close to the diaphragm set, of the air cavity and the oil cavity, and metal C-shaped rings are arranged in the sealing grooves. The utility model relates to the technical field of compressor air cylinder sealing, an existing two-layer sealing mode is improved into a multi-layer sealing mode, a plurality of hard contact sealing faces are formed by arranging the metal C-shaped ring and the sealing lines, layer-by-layer pressure reduction is achieved, the sealing effect is good, and the sealing effect is good. The sealing reliability of the diaphragm compressor cylinder is effectively improved, and the possibility of gas leakage is reduced; the metal C-shaped ring is adopted to replace an O-shaped rubber ring to serve as a main sealing piece, the strength is greatly improved, higher pressure can be borne, and the sealing problem of the large-diaphragm-cavity high-pressure diaphragm compressor air cylinder under high pressure is successfully solved.

The application relates to the technical field of diaphragm compressors and discloses a design method of a self-adaptive compensation pressure pipe based on a butterfly spring, which comprises the following steps: S1, determining design boundary conditions and performance indexes; S2, calculating the axial relative displacement Delta L between a pressure pipe and adjacent cooling components caused by thermal deformation; S3, performing parameterized modeling and preliminary selection on a butterfly spring group, determining the rigidity and the maximum compression amount of a single butterfly spring, and establishing a total rigidity model of the butterfly spring group; S4, performing system rigidity matching and checking, establishing a load fluctuation control equation, and making the actual load fluctuation rate meet the conditions through parameter optimization iteration; S5, determining the final combination of the parallel quantity n, the serial quantity m and the total initial compression amount of the butterfly spring group according to the optimization result; and S6, completing the design of the pressure pipe structure based on the final parameter combination. The application solves the problem of sealing performance attenuation under long-term variable working condition operation.

The utility model discloses a diaphragm compressor multi-equipment series connection control system, which relates to the technical field of diaphragm compressors, and comprises an M1 diaphragm compressor and an M2 diaphragm compressor, a first-stage cylinder air inlet on the M1 diaphragm compressor is connected with an air outlet on an air inlet buffer tank, an air source is introduced into the air inlet on the air inlet buffer tank, and a second-stage cylinder air inlet on the M2 diaphragm compressor is connected with an air outlet on the M2 diaphragm compressor. A first-stage gas assembly is arranged between a first-stage cylinder exhaust port in the M1 diaphragm compressor and a second-stage cylinder air inlet in the M1 diaphragm compressor, a second-stage gas assembly is arranged between a second-stage cylinder exhaust port in the M1 diaphragm compressor and a third-stage cylinder air inlet in the M2 diaphragm compressor, and a bridging valve is arranged between an air outlet in the air inlet buffer tank and the second-stage gas assembly. And a third-stage cylinder gas outlet in the M2 diaphragm compressor is connected with a third-stage gas assembly. The temperature rise of the series control device is much lower than that of a single device (abnormal work), too high temperature is avoided, damage to the device is avoided, stable output air pressure is guaranteed, and the shutdown risk is reduced.

This invention relates to the field of waste gas transfer technology, specifically to a radioactive waste gas transfer and storage system and its control method. The system includes a buffer tank, a diaphragm compressor, a waste gas transfer pipeline, a gas supply pipeline, a feed pipeline, a pressurized exhaust pipeline, and a control interlock circuit. The inlet of the waste gas transfer pipeline is connected to the outlet of the buffer tank, and the outlet of the waste gas transfer pipeline is connected to the diaphragm compressor. The inlet of the gas supply pipeline is connected to the exhaust port of the upstream system, the inlet of the feed pipeline is connected to the outlet of the gas supply pipeline, and the outlet of the feed pipeline is connected to the inlet of the buffer tank. The inlet of the pressurized exhaust pipeline is connected to the outlet of the gas supply pipeline. This invention allows for pressurization via the diaphragm compressor when the upstream system's exhaust pressure is low, and for direct discharge via a safety valve when the upstream system's exhaust pressure is high, thus meeting the gas supply requirements of the waste gas treatment process section and improving the applicability and flexibility of the transfer process section.

The utility model discloses an electromagnetic proportional follow-up valve for a diaphragm compressor, which relates to the technical field of follow-up valves and comprises an upper valve body, a lower valve body and a proportional electromagnet component, the upper valve body is arranged at the top of the lower valve body, the proportional electromagnet component is arranged at the top of the upper valve body, a push rod is slidably connected in the upper valve body, and an upper spring seat is arranged at the lower end of the push rod. A lower spring seat is arranged at the upper end of the valve core; a pressure spring is arranged between the upper spring seat and the lower spring seat; plunger holes are formed in the valve core and the lower spring seat; an oil distribution ring is mounted on the inner wall of the lower valve body; a valve seat is arranged at the top of the connector, and oil drainage holes are formed in the connector and the valve seat. Opening and closing of the follow-up valve under the high-pressure or large-flow working condition can be controlled through small electromagnetic force, meanwhile, the closing resistance of the valve element is small, the closing response speed is higher, and the control requirement of the diaphragm compressor under the extreme working condition is met.

Disclosed is a service life test apparatus for production of a diaphragm of a diaphragm compressor. The apparatus includes a bottom frame, a test diaphragm head, an oil pressure boosting assembly, a gas pressure boosting assembly and a driving assembly. The test diaphragm head is installed on the bottom frame and is configured to fix the diaphragm. A support frame is installed on the bottom frame. The oil pressure boosting assembly and the gas pressure boosting assembly are installed at positions of two sides of the support frame. Through the arrangement of the test diaphragm head, the pressure boosting assemblies and the driving assembly, a test load may be exerted onto the diaphragm by using gas pressure and oil pressure, and an actual work environment, the received load magnitude and the load distribution condition of the diaphragm may be simulated, so that test results may be more accurate.

This utility model discloses a diaphragm compressor, including a compressor body. A base plate is fixedly connected to the bottom of the compressor body, and a mounting plate is sleeved on the outside of the base plate. Mounting holes are formed on the surface of the mounting plate. A first fixing block is fixedly connected to the surface of the base plate, and a second fixing block is fixedly connected to the surface of the mounting plate. A shaft is fixedly connected to the side of the first fixing block. This diaphragm compressor, by installing a base plate at the bottom of the compressor body, allows for easy installation. When the compressor body needs to be disassembled and moved to another location, simply rotate the rotating rod to remove it from the second fixing block, allowing the compressor body to be lifted and moved, thus making fixing and disassembly more convenient.

The invention discloses an automatic pipe coiling device for a diaphragm compressor and a control method of the automatic pipe coiling device, and relates to the technical field of diaphragm compressors. The device comprises a base, a first support and a second support are fixed to the two sides of the upper end of the base respectively, a rotating structure used for rotating an air pipe is arranged at the upper end of the first support, and a rotating structure used for rotating the air pipe is arranged between the first support and the second support; a first moving block, a second moving block and a tail supporting structure are sequentially arranged from the first support to the second support. The third motor drives the worm to rotate, so that the deflection angle of the guide piece is accurately controlled, and accurate regulation and control of the winding angle of the seamless pipe are achieved; meanwhile, the line supporting structure provides stable supporting for the air pipe, and the stability and straightness of the air pipe in the pipe coiling process are ensured; therefore, the consistency of the same batch of coil pipes with the same specification in angle and distance is improved, so that the stable improvement of the quality of the coil pipes is ensured, the problem of inconsistency of the coil pipes caused by human factors is avoided, and the difficulty and the cost of subsequent processing are reduced.

The sealing gasket structure of the hydrogen diaphragm compressor comprises an air cylinder and a connecting pipeline in the hydrogen diaphragm compressor, notches are formed in the sides, close to each other, of the air cylinder and the connecting pipeline, annular pieces fixed relative to the notches are installed in the notches, and an annular protruding block A and an annular protruding block B are fixedly installed on one side of each annular piece. An annular sealing gasket is arranged in the notch, the fixed end of the sealing gasket is fixed to the inner ring of the annular protruding block A, and the free end of the sealing gasket is subjected to acting force which enables the sealing gasket to move in the direction away from the annular protruding block B. The sealing gasket is of a structure with the Z-shaped section, the sealing gasket is extruded through the annular protruding block A and the annular protruding block B, the sealing gasket is attached to the notch, two sealing areas are formed, the sealing performance is improved, when the surface contact portion of the sealing gasket is abraded and thinned, the free end of the sealing gasket is moved through the tension spring, the connecting portion is converted into the surface contact portion, and the abraded portion is replaced. The problem of gas leakage is solved, and the service life of the sealing gasket is prolonged.

The utility model discloses a detachable diaphragm compressor pump station box, which relates to the technical field of diaphragm compressor pump station boxes and comprises a box body frame, the left side of the box body frame is connected with a left side plate through bolts, and the right side of the box body frame is connected with a right side plate through bolts. The front side of the box body frame is connected with a front side plate through bolts, the rear side of the box body frame is connected with a rear side plate through bolts, the top of the box body frame is connected with a top plate through bolts, an upper support is arranged on the upper portion in the box body frame, and a bottom support is arranged at the bottom of the box body frame. According to the skid-mounted system, later equipment personnel can conveniently check, sort and maintain the oil way system, so that the whole skid-mounted system is neat and attractive, the sorting time of equipment maintenance personnel on the oil way system is saved, the equipment maintenance personnel do not need to work in a narrow skid-mounted space, and the personal safety of the equipment personnel is also guaranteed.

The utility model discloses a kind of lightweight high-pressure diaphragm compressor, including cylinder cover, cylinder base, the diaphragm group being clamped between the both, and the upper membrane plate and lower membrane plate being separately arranged in the both sides of diaphragm group. Intake valve and exhaust valve are fixed to the side of upper membrane plate away from diaphragm group, the side of upper membrane plate away from diaphragm group is equipped with intake valve sealing surface and exhaust valve sealing surface, respectively with the valve core sealing end of intake valve and exhaust valve form contact seal, constitute the first sealing passage and second sealing passage of intercommunicating air cavity. By the air valve installation position is transferred from traditional cylinder cover to upper membrane plate, and high-strength aluminum alloy cylinder cover is used, more than 30% weight reduction of complete machine is realized, the portability and mobile adaptability of equipment are greatly improved, and reliable sealing connection between air valve and air cavity is guaranteed. The portable compressor is particularly suitable for high-purity hydrogen, medical oxygen and electronic-grade nitrogen and other site compression applications that need to be moved frequently, and the portability of high-pressure diaphragm compressor is improved.

The utility model discloses an adjustable diaphragm compressor cylinder head supporting device, which relates to the technical field of diaphragm compressors and comprises channel steel, upper base plates, puller bolts and supporting pads, the upper base plates are symmetrically arranged at the lower ends of the two sides of the channel steel and detachably connected with a bottom pry of the diaphragm compressor, tensioning welding blocks are symmetrically arranged on the two sides of the top of the channel steel, and the puller bolts are detachably connected with the supporting pads. Nuts are symmetrically arranged on the inner side and the outer side of the tensioning welding block, puller bolts are connected into the nuts on the two sides of the tensioning welding block in a threaded mode, the inner ends of the puller bolts are rotationally connected to a supporting pad in sliding connection with the channel steel, and limiting baffles are symmetrically arranged on the positions, on the two sides of the supporting pad, of the channel steel. The supporting pad can effectively absorb vibration of the cylinder head, and the stability and reliability of the diaphragm compressor are improved; the supporting force of the supporting pad is adjusted through the puller bolt, the supporting pad adapts to the requirements under different working conditions, the upper side of the supporting pad is a section of curvature surface, it is guaranteed that the surface is completely attached to the cylinder head, and the cylinder head of the diaphragm compressor is borne.

The invention relates to a hydrogen storage pressurization device and a hydrogen storage pressurization system, the hydrogen storage pressurization device comprises a diaphragm compressor, an exhaust pipeline and a cyclone separator, the diaphragm compressor comprises a diaphragm, a hydraulic cavity and a pressurization cavity which are located on the two sides of the diaphragm respectively, and an air inlet and an exhaust port which communicate with the pressurization cavity; one end of the exhaust pipeline is communicated with the exhaust port, and the other end of the exhaust pipeline is communicated with an air inlet or an air storage tank of the other diaphragm compressor; the cyclone separator is provided with a separation cavity communicated with the interior of the exhaust pipeline, and the separation cavity is used for separating an oil-gas mixture entering the cyclone separator. According to the technical scheme, leaked oil-gas mixture is subjected to gas-liquid separation in the separation cavity, so that the possibility of damaging a downstream pipeline and downstream equipment is reduced, the integrity and safety of the hydrogen storage pressurizing device are guaranteed, and in addition, the cyclone separator can also realize flow guide and pressure stabilization of high-pressure hydrogen through the separation cavity.

The invention belongs to the field of compressors, and discloses a diaphragm compressor diaphragm cavity molded line design method and a related device, and the method comprises the steps: taking the initial radius of a diaphragm of a diaphragm compressor and the initial parameters of a diaphragm cavity molded line as initial values, and assigning an Abaqus diaphragm simulation Python program; program operation: establishing a geometric model of the diaphragm and a cylinder head with a corresponding diaphragm cavity molded line; setting the material attribute of each part in the geometric model; setting boundary conditions of the geometric model, wherein oil pressure and air pressure borne by the two surfaces of the diaphragm are set to be uniform pressure loads, and the oil pressure and the air pressure are applied to the two surfaces of the diaphragm respectively; dividing grids, setting calculation parameters, establishing jobs and submitting the jobs; the Abaqus executes operation, membrane stress is obtained through simulation calculation, the obtained membrane stress serves as a result and is returned to an Abaqus membrane simulation Python program, and membrane cavity molded line optimization is carried out. Molded line optimization is carried out by incorporating the actual stress state that the two surfaces of the diaphragm bear the oil gas pressure, and it is ensured that the diaphragm cavity molded line optimization result is matched with the actual working condition.

The invention relates to a diaphragm compressor arrangement comprising, at least one first diaphragm compressor including a first diaphragm arranged between a first hydraulic fluid chamber and a first gas chamber, at least one second diaphragm compressor including a second diaphragm arranged between a second hydraulic fluid chamber and a second gas chamber, a stacked head manifold comprising a first hydraulic fluid supply chamber, a second hydraulic fluid supply chamber and a cylinder wherein said first hydraulic fluid supply chamber is in fluid communication with said first hydraulic fluid chamber, wherein said second hydraulic fluid supply chamber is in fluid communication with said second hydraulic fluid chamber, and wherein said first and second hydraulic fluid supply chambers are furthermore in fluid communication with said cylinder, and a piston mechanically connected to a crankshaft, said crankshaft is configured for linear actuation of said piston in said cylinder.

The utility model relates to the technical field of diaphragm compressors, in particular to a pressure regulating device for an overflow valve of a diaphragm compressor. Comprising a membrane head, an overflow opening in the membrane head is connected with a first connector of a four-way connector through a pipeline, a second connector of the four-way connector is connected with an overflow valve through a pipeline, a third connector of the four-way connector is connected with a needle valve A through a pipeline, and the overflow valve is connected with a backflow pipeline after being in butt joint with the pipeline of the needle valve A; a fourth connector of the four-way connector is connected with the one-way valve through a pipeline, the other end of the one-way valve is connected with a first connector of the three-way connector, a second connector of the three-way connector is connected with the pressure gauge through a pipeline, and a third connector of the three-way connector is connected with the needle valve B through a pipeline. The pressure of hydraulic oil in the diaphragm head can be calibrated according to the pressure displayed by the pressure gauge, the specific position of the adjusting handle is finally determined and fixed through the locking nut, the overflow pressure of the overflow valve is accurately adjusted, and it is ensured that the internal pressure of the diaphragm head meets the standard requirement.

1. Name of the product in this design: Diaphragm compressor follow-up valve. 2. Application of this design: A follow-up valve used in a diaphragm compressor to regulate the oil-gas pressure difference at the cylinder head. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application discloses a diaphragm compressor diaphragm fault detection device and relates to the technical field of diaphragm detection.The diaphragm compressor diaphragm fault detection device comprises a rack, a mounting rack and sliding rails, the mounting rack is connected to the rack, the sliding rails are mounted on the mounting rack, sliding plates are slidably connected to the two sides of the sliding rails, a transverse movement driving assembly for driving the sliding plates to slide is mounted on the mounting rack, a crimping assembly for crimping detection of the diaphragm is arranged on the sliding plates, a stop assembly for controlling the diaphragm to enter the rack is mounted in the rack, and a diaphragm storage frame is arranged on the top of the rack.The diaphragm is automatically crimped by cooperation of the transverse movement driving assembly and the crimping assembly, and the crimping is simulated by manual crimping action, so that the stress positions of the diaphragm detection are the same, the crimping degree of the diaphragm can be accurately controlled, the accuracy of the diaphragm bending resistance detection result is ensured, the labor intensity of the workers is reduced, and the diaphragm detection efficiency is improved.

The application discloses a compensating oil pump for a two-stage cylinder diaphragm compressor and relates to the technical field of diaphragm compressors.The compensating oil pump comprises a compensating oil pump mounting frame mounted on a crankcase, a transmission shaft penetrating through the compensating oil pump mounting frame and being in transmission connection with a crankshaft, and two groups of oil supplement pump assemblies arranged on the compensating oil pump mounting frame.The oil supplement pump assembly comprises a pump body, a plunger sleeve and a plunger slidingly arranged in the plunger sleeve.A first eccentric sleeve and a second eccentric sleeve are arranged on the transmission shaft.The first eccentric sleeve and the second eccentric sleeve are in one-to-one correspondence with the plungers of the two oil supplement pump assemblies and can drive the plungers to reciprocate in the plunger sleeves so that the oil supplement pump assemblies can supplement and discharge oil.Through a set of power input, power is output to two sides by using two eccentric sleeves, and the two oil supplement pump components are driven to simultaneously supplement the oil volume of two cylinders of the diaphragm compressor.The device is compact in structure, easy to install, can simultaneously supplement the oil volume of the two cylinders and improves the oil supplement efficiency.

The application discloses a multifunctional integrated gas control system for a dilution refrigerator, and particularly relates to the field of refrigeration and cryogenics, and comprises a liquid nitrogen cold trap, a gas buffer tank, an integrated valve box, a dilution refrigeration inner circulation pipeline, a diaphragm compressor, a Roots pump, a turbo molecular pump and a vacuum pumping pump group. The system uses a highly integrated valve box module, which is responsible for gas path control in different stages such as starting, running, stopping and rewarming of the dilution refrigeration cycle; the application optimizes the flow conductance of the gas path in different temperature zones and under different pressures, reduces heat loss, and ensures high airtightness in the whole temperature zone from room temperature to extremely low temperature, thereby improving the reliability and automation degree of the dilution refrigerator and having a very positive significance for practical application of the dilution refrigeration system.

The application discloses a kind of high-pressure hydrogen diaphragm compressor test system and test method, belong to the field of compressor testing.The test system includes: nitrogen supply device and hydrogen supply device, pressure reducing valve on the air inlet pipeline of the compressor to be tested;At least one first control valve, the first control valve is used to control nitrogen supply device and hydrogen supply device one of them with the compressor to be tested is connected or closed;It further includes exhaust buffer tank, the exhaust port of the compressor to be tested is also provided between the inlet of exhaust buffer tank back pressure valve;The outlet of exhaust buffer tank is connected to the pressure relief pipeline and circulation pipeline, and circulation pipeline is connected to the pipeline between pressure reducing valve and the air inlet of the compressor to be tested;At least one second control valve, the second control valve is used to control the outlet of exhaust buffer tank and the one-way communication of pressure relief pipeline and circulation pipeline;And air inlet detection device and exhaust detection device.The application is particularly suitable for the performance test of diaphragm compressor for high-pressure hydrogenation station.

The invention belongs to the technical field of diaphragm compressors, and particularly relates to a processing technology and device for a cylinder cover of a diaphragm compressor. A circular through groove is formed in a platform of the device, the cylinder cover is circular and is concentric with the circular through groove after being clamped, and a mounting frame is arranged below a table top of the platform and fixedly connected with the platform; the lifting device is mounted on the mounting frame and is perpendicular to the table top, the output end of the lifting device extends upwards and is fixedly connected with a base of the scrap removing assembly, the base of the scrap removing assembly is connected with an air inlet pipe for inputting high-pressure air, and the upper portion of the scrap removing assembly is of an extending-in structure capable of extending into a hole to be machined. An air guide pipe with a downward output end and an injection structure connected to the output end of the air guide pipe are arranged in the extending-in structure, the air guide pipe communicates with the air inlet pipe, and an outlet of the injection structure is connected to an injection pipe which is arranged in the tangential direction of the extending-in part of the scrap cleaning assembly and inclines downwards. Scraps are radially sucked from the end face of the step, cooling liquid is discharged, and the scraps on the end face of the step can be efficiently cleaned.

The invention belongs to the technical field of diaphragm compressors, and particularly relates to a diaphragm compressor oil discharge pressure measuring device and a design method thereof. An oil discharge pressure measuring device of a diaphragm compressor comprises two sections of pressure guiding pipelines, a one-way valve, a throttling element and a pressure sensor. One end of the first pressure guiding pipeline communicates with the oil side cavity, and the other end of the first pressure guiding pipeline communicates with the inlet end of the one-way valve and one end of the throttling element. The outlet end of the one-way valve and the other end of the throttling element are respectively communicated with one end of a second pressure drawing pipeline; a pressure sensor is arranged at the other end of the second pressure guiding pipeline; and the pressure sensor displays the collected pressure as an oil discharge pressure signal. According to the application, the oil discharge pressure of the diaphragm compressor in the working cycle can be timely and accurately obtained.